Response surface methodology analysis of the photodegradation of methyl orange dye using synthesized TiO2/Bentonite/ZnO composites
In this research, a modified TiO2/Bentonite (Be) composite with various values of zinc oxide was used as a photocatalyst in the degradation of methyl orange as a dye pollutant. The synthesized composites were characterized by X-ray diffraction (XRD), Field emission scanning electron microscopy (FESE...
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| Format: | Article |
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Iranian Research Organization for Science and Technology (IROST)
2022-02-01
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| Series: | Advances in Environmental Technology |
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| Online Access: | https://aet.irost.ir/article_1130_ead885f9c1edc20161316d510980a32f.pdf |
| _version_ | 1797790000847257600 |
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| author | Aazam Dinari Jafar Mahmoudi |
| author_facet | Aazam Dinari Jafar Mahmoudi |
| author_sort | Aazam Dinari |
| collection | DOAJ |
| description | In this research, a modified TiO2/Bentonite (Be) composite with various values of zinc oxide was used as a photocatalyst in the degradation of methyl orange as a dye pollutant. The synthesized composites were characterized by X-ray diffraction (XRD), Field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FTIR), X-ray fluorescence (XRF), and Thermal gravimetric analysis (TGA). The results showed that the composite synthesized by 6.5% zinc oxide had the highest anatase phase and appropriate thermal stability. Moreover, the simultaneous effect of different parameters was investigated using the central composite (CC) design defined under response surface methodology (RSM). The results showed that the polynomial model obtained from the analysis of variance (ANOVA) correctly predicted the experimental data. The optimal conditions of dye degradation for the synthesized composite with 6.5% zinc oxide using 4 g/L of photocatalyst for 30 minutes at a pH=5 and a dye concentration of 20 ppm had the highest degradation percentage equal to 95% with a high desirability of 0.981. Also, the photocatalytic activity of TiO2/Be/ZnO (6.5%) in certain conditions for reuse in five consecutive steps showed a slight decrease in the degradation of methyl orange. |
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| id | doaj.art-a145c2e266e24707963bd0cb0e6d8a59 |
| institution | Directory Open Access Journal |
| issn | 2476-6674 2476-4779 |
| language | English |
| last_indexed | 2024-03-13T01:58:33Z |
| publishDate | 2022-02-01 |
| publisher | Iranian Research Organization for Science and Technology (IROST) |
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| series | Advances in Environmental Technology |
| spelling | doaj.art-a145c2e266e24707963bd0cb0e6d8a592023-07-02T08:58:15ZengIranian Research Organization for Science and Technology (IROST)Advances in Environmental Technology2476-66742476-47792022-02-0181314610.22104/aet.2022.5204.14091130Response surface methodology analysis of the photodegradation of methyl orange dye using synthesized TiO2/Bentonite/ZnO compositesAazam Dinari0Jafar Mahmoudi1School of Chemistry, Damghan University, Damghan, IranSchool of Chemistry, Damghan University, Damghan, IranIn this research, a modified TiO2/Bentonite (Be) composite with various values of zinc oxide was used as a photocatalyst in the degradation of methyl orange as a dye pollutant. The synthesized composites were characterized by X-ray diffraction (XRD), Field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FTIR), X-ray fluorescence (XRF), and Thermal gravimetric analysis (TGA). The results showed that the composite synthesized by 6.5% zinc oxide had the highest anatase phase and appropriate thermal stability. Moreover, the simultaneous effect of different parameters was investigated using the central composite (CC) design defined under response surface methodology (RSM). The results showed that the polynomial model obtained from the analysis of variance (ANOVA) correctly predicted the experimental data. The optimal conditions of dye degradation for the synthesized composite with 6.5% zinc oxide using 4 g/L of photocatalyst for 30 minutes at a pH=5 and a dye concentration of 20 ppm had the highest degradation percentage equal to 95% with a high desirability of 0.981. Also, the photocatalytic activity of TiO2/Be/ZnO (6.5%) in certain conditions for reuse in five consecutive steps showed a slight decrease in the degradation of methyl orange.https://aet.irost.ir/article_1130_ead885f9c1edc20161316d510980a32f.pdftio2bentonitezinc oxidemethyl orangeresponse surface methodology |
| spellingShingle | Aazam Dinari Jafar Mahmoudi Response surface methodology analysis of the photodegradation of methyl orange dye using synthesized TiO2/Bentonite/ZnO composites Advances in Environmental Technology tio2 bentonite zinc oxide methyl orange response surface methodology |
| title | Response surface methodology analysis of the photodegradation of methyl orange dye using synthesized TiO2/Bentonite/ZnO composites |
| title_full | Response surface methodology analysis of the photodegradation of methyl orange dye using synthesized TiO2/Bentonite/ZnO composites |
| title_fullStr | Response surface methodology analysis of the photodegradation of methyl orange dye using synthesized TiO2/Bentonite/ZnO composites |
| title_full_unstemmed | Response surface methodology analysis of the photodegradation of methyl orange dye using synthesized TiO2/Bentonite/ZnO composites |
| title_short | Response surface methodology analysis of the photodegradation of methyl orange dye using synthesized TiO2/Bentonite/ZnO composites |
| title_sort | response surface methodology analysis of the photodegradation of methyl orange dye using synthesized tio2 bentonite zno composites |
| topic | tio2 bentonite zinc oxide methyl orange response surface methodology |
| url | https://aet.irost.ir/article_1130_ead885f9c1edc20161316d510980a32f.pdf |
| work_keys_str_mv | AT aazamdinari responsesurfacemethodologyanalysisofthephotodegradationofmethylorangedyeusingsynthesizedtio2bentoniteznocomposites AT jafarmahmoudi responsesurfacemethodologyanalysisofthephotodegradationofmethylorangedyeusingsynthesizedtio2bentoniteznocomposites |